Datasheet

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DIR INEN PULLEN OUT Configuration
0 0 1 0 Pull-down; input disabled
0 0 1 1 Pull-up; input disabled
0 1 0 X Input
0 1 1 0 Input with pull-down
0 1 1 1 Input with pull-up
1 0 X X Output; input disabled
1 1 X X Output; input enabled
32.6.3.2 Input Configuration
Figure 32-4. I/O configuration - Standard Input
PULLEN
DIR
OUT
IN
INEN
PULLEN INEN DIR
0 1
0
Figure 32-5. I/O Configuration - Input with Pull
PULLEN
DIR
OUT
IN
INEN
PULLEN INEN DIR
1 1
0
Note: When pull is enabled, the pull value is defined by the OUT value.
32.6.3.3 Totem-Pole Output
When configured for totem-pole (push-pull) output, the pin is driven low or high according to the
corresponding bit setting in the OUT register. In this configuration there is no current limitation for sink or
source other than what the pin is capable of. If the pin is configured for input, the pin will float if no
external pull is connected.
Note: Enabling the output driver will automatically disable pull.
SAM D5x/E5x Family Data Sheet
PORT - I/O Pin Controller
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 889